Sparse Representations of Positive Functions via First- and Second-Order Pseudo-Mirror Descent.
Abhishek ChakrabortyKetan RajawatAlec KoppelPublished in: IEEE Trans. Signal Process. (2022)
Keyphrases
- sparse representation
- dictionary learning
- image classification
- face recognition
- sparse coding
- compressive sensing
- joint optimization
- dimensionality reduction
- sparse reconstruction
- compressed sensing
- random projections
- object tracking
- image patches
- high dimensional data
- signal processing
- higher order
- regularized least squares
- manifold learning
- image representation
- test images
- data sets
- generative model
- feature space
- feature extraction
- sparse coefficients